Finding the Fourth Proportional to 1,047.79, 1,447.83 and 752.55

Step by Step Solution

1. Step 1: Write the proportion equation
   1,047.79 : 1,447.83 = 752.55 : x
2. Step 2: Convert to fraction form
   1,047.79/1,447.83 = 752.55/x
3. Step 3: Cross multiply
   1,047.79x = 1,447.83 × 752.55
4. Step 4: Simplify right side
   1,047.79x = 1,089,564.47
5. Step 5: Solve for x
   x = 1,089,564.47/1,047.79
6. Step 6: Final answer
   x = 1,039.87